To be able to fight against Ozma, first you must have completed the chocographs game and have located the Air Garden, if not click here for help. When inside the Chocobo Air Garden, go to the back of the screen where there is a little cave by som rocks. A ! should appear, click X when it does, and Mene will talk to you. He tries to warn you about the great strength of Ozma, and a choice comes up, to back out or fight him. You also get the chance to sort your party out if you already haven't.

Heres an example of how your party should look. (For the equipment as it varies between characters, just select the best item with the best stats, and also check to see if it absorbs anything).

Equipment

Weapon - Ultima Weapon

Head - Circlet

Arm - Power Wrist

:Body - Ninja Gear - They absorb shadow,very important.

Add-on - Rosetta Ring

Skills

Auto Haste :: Cut down on Ozma's speed advantage

Auto Life :: This one time reraise can really save you

HP +20% :: The extra HP is a must

Insomniac :: Curse can probably put you to sleep

Antibody :: Curse can poison you

Bright Eyes :: Curse also causes darkness

Locomotion :: This is also helpful.

Auto Regen :: Good to keep your health topped up.

Clear Headed :: Curse also gives you confuse.